Cranford Controls

A105N Alarm Sounder

Product Overview

The A105N is a high output, 112dB(A) alarm sounder. Low current consumption and high SPL in a robust fire retardant IP66 housing ensure the A105N is suitable for all general signalling applications including fire, security and process control.


  • Automatic synchronisation on multi-sounder system.
  • Continuously rated.
  • Stainless steel fixings.
  • Unit can be mounted using external lugs or internal
  • BESA compatible fixing positions.
  • Duplicate cable terminations (in & out for daisy-chain installations).
  • Tropicalisation available on request.
  • Available with custom tone configurations and frequencies.
  • ‘Programmable’ version available:
    – 45 alarm tones
    – 4 remotely selectable stages
    – Any tone can be assigned to any stage
    – User configurable continuous frequency tone


Maximum Output 112dB(A) @ 1 metre
Nominal Output 105dB(A) @ 1m +/- 3dB – Tone 2
No. of Tones 32 (UKOOA / PFEER compliant)
No. of Stages 3
Volume Control Max. 105dB(A); Min. 96dB(A) – Tone 2
Effective Range 60m @ 1KHz
Voltages DC 24V dc (10-30V dc); 48V dc (35-60V dc); 100V dc (72-120V dc)
[24V dc units can use 24V ac for single stage apps]
Voltages AC 24V ac; 115V ac; 230V ac
Stage Switching Negative. Positive switching option available. 
Reverse polarity stage switching on DC units.
Ingress Protection IP66
Housing Material High impact UL94 V0 & 5VA FR ABS
Colour Red (RAL3000), Grey (RAL7038) & White.


Part Numbers

24V dc A105NDC24[x]
48V dc A105NDC48[x]
100V dc A105NDC100[x]
24V ac A105NAC24[x]
115V ac A105NAC115[x]
230V ac A105NAC230[x]